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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 12601. |
When embryo develops in the body of female but it does not obtain nutrients from the mother [RPMT 1999] |
| A. | Ovo-viviparous |
| B. | Viviparous |
| C. | Oviparous |
| D. | None of these |
| Answer» B. Viviparous | |
| 12602. |
The black wood tree of India is [Haryana PMT 1997] |
| A. | Acacia nilotica |
| B. | Dalbergia sissoo |
| C. | Dalbergia latifolia |
| D. | Mangifera indica |
| Answer» B. Dalbergia sissoo | |
| 12603. |
In macro and telolecithal eggs site of amphimixis lies in the |
| A. | Centre of active cytoplasm at the animal pole |
| B. | Near the centre of the egg |
| C. | Centre of active cytoplasm at the vegetal pole |
| D. | All the above |
| Answer» B. Near the centre of the egg | |
| 12604. |
Glycoproteins contain [KCET 2000] |
| A. | Protein and fat |
| B. | Protein and salt |
| C. | Protein and vitamin |
| D. | Protein and carbohydrates |
| Answer» E. | |
| 12605. |
Stem cuttings are commonly used for the propagation of [BHU 2005] |
| A. | Banana |
| B. | Rose |
| C. | Mango |
| D. | Cotton |
| Answer» C. Mango | |
| 12606. |
A male human is heterozygous for autosomal genes A and B and is also hemizygous for hemophilic gene h. What proportion of his sperms will be abh [CBSE PMT 2004] |
| A. | \[\frac{1}{16}\] |
| B. | \[\frac{1}{4}\] |
| C. | \[\frac{1}{8}\] |
| D. | \[\frac{1}{32}\] |
| Answer» D. \[\frac{1}{32}\] | |
| 12607. |
Assertion : Phenylketonuria is a recessive hereditary disease caused by body?s failure to oxidise an amino acid phendylanine to tryrosine, because of a defective enzyme. Reason : It results the presence of phenylalanine acid in urine. [AIIMS 2000] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12608. |
Which phytohormone is situated on its synthesis site [AMU 2005] |
| A. | Gibberellin |
| B. | Auxin |
| C. | Ethylene |
| D. | ABA |
| Answer» E. | |
| 12609. |
Which one of the following categories of organisms do not evolve oxygen during photosynthesis [CPMT 1991, 99; JIPMER 1999; AIIMS 2004] |
| A. | Red algae |
| B. | Photosynthetic bacteria |
| C. | \[{{C}_{4}}\] plants with Kranz anatomy |
| D. | Blue green algae |
| Answer» C. \[{{C}_{4}}\] plants with Kranz anatomy | |
| 12610. |
Assertion : Pila sometimes undergoes summer sleep or aestivation. Reason : Pila have to adapt themselves for unfavourable environment. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12611. |
Read the assertion and reason carefully: Assertion : In floating aquatic plants, root caps are absent. Reason : Root pockets are present in aquatic plants. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 12612. |
Carapace is present in [CPMT 1999; BHU 2005] |
| A. | Toad |
| B. | Bird |
| C. | Frog |
| D. | Tortoise |
| Answer» E. | |
| 12613. |
The reservoir pool for gaseous cycles of matter is |
| A. | Atmosphere |
| B. | Hydrosphere |
| C. | Both a and b |
| D. | Lithosphere |
| Answer» D. Lithosphere | |
| 12614. |
Assertion : Blood is red in annelida. Reason : RBCs are absent in them. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 12615. |
Which one is present in milk? |
| A. | Lactose |
| B. | Glucose |
| C. | Cellulose |
| D. | Glycogen |
| Answer» B. Glucose | |
| 12616. |
Assertion : The nitrogen-fixing bacteria in leguminous plant nodules live as symbionts. Reason : Leg-haemoglobin synthesized by leguminous plants protect bacteria. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12617. |
Most of the cells in areolar tissue are [CBSE PMT 1992] |
| A. | Fibroblasts |
| B. | Macrophages |
| C. | Mast cells |
| D. | All the above |
| Answer» E. | |
| 12618. |
Red pigment (Leghaemoglobin) having affinity for oxygen is present in the roots of [CBSE PMT 2001] |
| A. | Mustard |
| B. | Soybean |
| C. | Carrot |
| D. | Radish |
| Answer» C. Carrot | |
| 12619. |
Assertion : Mosses are evolved from algae. Reason : Protonema of mosses is similar to some green algae. [AIIMS 2001] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12620. |
Read the assertion and reason carefully: Assertion : Sucker is an underground stem. Reason : Sucker stem never comes above the ground. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 12621. |
In the formation of ascorbic acid, the micro-organism used is |
| A. | Acetobacter |
| B. | Streptomyces sp. |
| C. | Bacillus megatherium |
| D. | Propioni bacterium |
| Answer» B. Streptomyces sp. | |
| 12622. |
Assertion : Balantidium coli lives in colon of human beings, only. Reason : The association is harmless. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» E. If the assertion is false but reason is true | |
| 12623. |
Meiosis is significant because |
| A. | It produces identical cells |
| B. | It restores the original number of chromosomes (after fertilization) |
| C. | There is doubling of DNA contents in the cell |
| D. | It occurs only in vegetative cells |
| Answer» C. There is doubling of DNA contents in the cell | |
| 12624. |
Which of the following is a non poisonous viviparous snake |
| A. | Ptyas |
| B. | Echiscarinots |
| C. | Uropeltis |
| D. | All of these |
| Answer» B. Echiscarinots | |
| 12625. |
In eukaryotic cell cycle, cell fusion experiments show that [AIEEE 2004] |
| A. | When an S-phase cell is fused with a \[{{G}_{1}}-\]phase cell, \[{{G}_{1}}-\]phase cell is stimulated to synthesize DNA |
| B. | When an S-phase cell is fused with a G1-phase cell |
| C. | When a \[{{G}_{1}}-\]phase cell is fused with a \[{{G}_{1}}-\]phase cell, DNA synthesis is induced in both \[{{G}_{1}}\] and \[{{G}_{2}}\] phase cells |
| D. | When a \[{{G}_{1}}-\]phase cell is fused with an M-phase |
| Answer» C. When a \[{{G}_{1}}-\]phase cell is fused with a \[{{G}_{1}}-\]phase cell, DNA synthesis is induced in both \[{{G}_{1}}\] and \[{{G}_{2}}\] phase cells | |
| 12626. |
Nutmegs of commerce which is extensively used as spices belong to genus |
| A. | Myristica |
| B. | Eugenia |
| C. | Cinnamomum |
| D. | Acacia |
| Answer» B. Eugenia | |
| 12627. |
Non-renewable source of energy is |
| A. | Forest wealth |
| B. | Wild life |
| C. | Hydel power |
| D. | Coal reserves |
| Answer» E. | |
| 12628. |
In pollen mother cells cytokinesis during meiosis is |
| A. | Successive type |
| B. | Simultaneous type |
| C. | In some cases successive type while in others simultaneous type |
| D. | No cytokinesis takes place |
| Answer» D. No cytokinesis takes place | |
| 12629. |
Anastral mitosis is found in [MHCET 2001] |
| A. | Animals |
| B. | Higher plants |
| C. | Bacteria |
| D. | Cyanobacteria |
| Answer» C. Bacteria | |
| 12630. |
The development of gametophyte from the vegetative parts of the sporophyte without the intervention of spores is called [CPMT 1999; BHU 1999] |
| A. | Parthenocarpy |
| B. | Parthenogenesis |
| C. | Apogamy |
| D. | Apospory |
| Answer» E. | |
| 12631. |
Read the assertion and reason carefully: Assertion : Quiescent centre is found in the centre of the root apex. Reason : It consists of actively dividing cells. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 12632. |
A genome is the [MP PMT 1994] |
| A. | Diploid set of chromosomes |
| B. | Haploid set of chromosomes |
| C. | Triploid set of chromosomes |
| D. | All the above |
| Answer» C. Triploid set of chromosomes | |
| 12633. |
Read the assertion and reason carefully: Assertion : The largest cell of the embryo sac is central cell. Reason : It consists of a fused nuclei. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 12634. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Bhang and Ganja are obtained from same plant. Reason : Bhang and Ganja are obtained from two different plants. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| E. | If assertion is false but reason is true. |
| Answer» C. If assertion is true but reason is false. | |
| 12635. |
In which of the following groups would you place a plant which produces spores and embryos but lacks seeds and vascular tissue [DPMT 1989] |
| A. | Fungi |
| B. | Bryophytes |
| C. | Pteridophytes |
| D. | Gymnosperms |
| Answer» C. Pteridophytes | |
| 12636. |
Deciduous forests have [AIIMS 1996; AFMC 2004] |
| A. | Variety of grasses |
| B. | Broad-leaved trees |
| C. | Narrow-leaved trees |
| D. | Variety of crocodiles |
| Answer» C. Narrow-leaved trees | |
| 12637. |
Which one has a poison gland [RPMT 1995] |
| A. | Wall lizard |
| B. | Scoliodon |
| C. | Rat snake |
| D. | Male platypus |
| Answer» E. | |
| 12638. |
The conversion of nitrate to nitrous oxide and nitrogen gas is termed as [KCET 2000] |
| A. | Nitrification |
| B. | Denitrification |
| C. | Nitrogen-fixation |
| D. | None of these |
| Answer» C. Nitrogen-fixation | |
| 12639. |
Which of the following is an anti- forest conservation activity [BVP 2003] |
| A. | Tree falling |
| B. | Preservation of wild animals |
| C. | Economy in timbering |
| D. | Prevention of fires |
| Answer» D. Prevention of fires | |
| 12640. |
Algae attached to stone is called [Orissa JEE 2004] |
| A. | Epilithic |
| B. | Epifolic |
| C. | Coenolithic |
| D. | None of these |
| Answer» B. Epifolic | |
| 12641. |
Assertion : Fruticose are well branched leafy lichens. Reason : These lichens are upright and have pendulous organisation and are attached to substratum by a discoid structure. [AIIMS 1996] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 12642. |
Assertion : Rupturing of skin causes the release of tiny coiled embryos of Dracunculus, in water. Reason : Dracunculus medinensis lives in the skin. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12643. |
The enzyme which converts proteins into peptones is[CPMT 1983] |
| A. | Erypsin |
| B. | Pepsin |
| C. | Trypsin |
| D. | Lipase |
| Answer» C. Trypsin | |
| 12644. |
The most valuable animal in desert is |
| A. | Yak |
| B. | Wilk ass |
| C. | Elephant |
| D. | Camel |
| Answer» E. | |
| 12645. |
Which monkey has prehensile tail [MP PMT 1995] |
| A. | Spider monkey |
| B. | Semnopithecus |
| C. | Rhesus monkey |
| D. | Bonnet monkey |
| Answer» B. Semnopithecus | |
| 12646. |
The banding pattern indicates that |
| A. | Gibbon, chimpanzee, gorilla and human are fundamentally the same |
| B. | Chromosome material is highly concerned throughout their evolution |
| C. | Differences in banding pattern is due to inversion, translocation etc. |
| D. | All the above |
| Answer» E. | |
| 12647. |
Assertion : Enzymes are defined as biological proteins. Reason : Chemically all enzymes are globular proteins. [AIIMS 1997] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 12648. |
Assertion : Biennial plants flower in two year. Reason : The biennial plants live for two years. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 12649. |
Which of the following is flightless bird [MH CET 2002] |
| A. | Emu |
| B. | Kiwi |
| C. | Ostrich |
| D. | All of the above |
| Answer» E. | |
| 12650. |
A nitrogen fixing bacterium that forms a loose association with the roots of crop plants is [Kerala PMT 2001] |
| A. | Azotobacter |
| B. | Bacillus polymyxa |
| C. | Clostridium |
| D. | Azospirillum |
| Answer» E. | |